08592+4803 HJ 2477A,BC (Iot UMa)

 
 
08H 59M 12.45S +48 02' 30.6" P.A. 105.6 SEP 1.94 MAG 3.13,9.20 SP A7IV DIST. 14.51 PC (47.33 L.Y.)
 
 
Coord 2000
08592+4803
Discov num
HJ 2477
Comp
A,BC
Coord arcsec 2000
08 59 12.45 +48 02 30.6
Date first
1831
Date last
2012
Obs
82
Pa first
349
Pa last
82
P.A. Now (θ)
105.6°
Sep first
13.5
Sep last
2.4
Sep. Now (ρ)
1.94"
Mag pri
3.13
Mag sec
9.20
delta mag (ΔM)
6.07
Spectral class
A7IV (white)
Pri motion ra
-441
Sec motion ra
Pri motion dec
-215
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
08592+4803 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Iot UMa 42630 08592+4803 HJ 2477 A,BC 1831 2012 82 106 1.9 3.13 9.20 6.07 Y <===
Show 42630 08592+4803 HU 628 BC 1903 2012 62 208 0.9 9.90 10.10 0.20 Y
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Iot UMa
Constellation
Ursa Major
SAO
42630
HIP
44127
HD
76644
HR
3569
GC
12407
ADS
7114
GL
Gl 331A
BD
BD+48 1707
Bayer
Iota Ursae Majoris
Bayer name
Iot UMa
Flamsteed
9 Ursae Majoris
Flamsteed name
9 UMa
Distance
14.51
Distance ly
47.33
last precise pa
81.5
last precise sep
2.397
 
 
ORBITAL ELEMENTS
 
 
Period (P)2084y± 15 Periastron (T)2029y± 1 Semi-major axis (a)16.7a± 0.3
Eccentricity (e)0.9± 0.02 Inclination (i)54°± 4 Longitude of periastron (ω)23°± 5
Node (Ω)134°± 2 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2010
label rho theta
2000 2.482 57.2
2001 2.436 59.2
2002 2.391 61.3
2003 2.348 63.5
2004 2.307 65.8
2005 2.269 68.2
2006 2.231 70.6
2007 2.197 73.1
2008 2.164 75.7
2009 2.133 78.4
2010 2.104 81.2
2011 2.078 84.0
2012 2.053 86.9
2013 2.030 89.8
2014 2.009 92.9
2015 1.989 96.0
2016 1.971 99.1
2017 1.953 102.3
2018 1.936 105.6
2019 1.918 108.9
2020 1.899 112.3
2021 1.879 115.7
2022 1.857 119.3
2023 1.832 122.9
2024 1.802 126.6
2025 1.769 130.5
2026 1.730 134.6
2027 1.686 138.8
2028 1.637 143.3
2029 1.584 148.0
2030 1.529 153.1

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic